Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9adc555b5d749840b0c61b2b9d60bc30c060389fa7328a2f4d3de88eb6cf144' 
  AND token = 'vcP0nT/fPMoqLYTugqn9pstuFojU8INc5mdXO0WZo1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}