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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2c6a5e2dbccb897070b7343fb39cb2173a6cc74f5af5c417e4ef9db80dbac227' 
  AND token = 'uLbuKX5kAwfHpchMZOfc5Y9fNJObf5RdUQ5h3qVv6hQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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