Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3508d8107c83ab43b6f633e2ba7aed18cc8bf3d2e1d0df63e7b07f45b3205e44' 
  AND token = 'wR2yLofNffafvaAZlXFK0xR4mvrakluJXLsFn1Yljbs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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