Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce30649fc97f45aca1eec0fca3ca56faacb6bc614851fb00ed3a54e41fa4cd45' 
  AND token = 'y7NICxC2Fs/IHBc0wwqCEJULsqE9hIRyYVXngHYewH4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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