Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c7eefd3411e793b930fa41ef758de4dc312a821beb3ea00da5cf917c82adc045' 
  AND token = 'XDA/jGs5JfaLLromWLVyzgB/1e3YyPVeN4PkqtMtHmk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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