Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67937c92e850f0400cdde2ac6fa5d3f448b85dd7a7ab385f27ac7210c6eac7e0' 
  AND token = '+tuZya+KQcJ1pp32WjjG+wYjHa68JDQVhA+81CPLUhE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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