Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0e8a93c90862a9bfd97ad4abc315c10e3eaa92b27b99669c99089889188e521' 
  AND token = 'FGM4TMP+CuvgR1hxFo6z1qKZAqvkzm5UpPWsa0V85f4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}