Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7002710469df322d96bac5e1c637b8c95e8980b3757ccd27dfd7982298d4fda' 
  AND token = 'MXR0TMp5R64Z3rDsZNboZr4QPMKnsbKazt2QSpq6wuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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