Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '90ed96e40d11cfe4b624a618ab46102c7cd1015f3319b0efc89547f3787d40af' 
  AND token = 'yWsKX29qSTCErTtFoLfktP6sYRkMP+xQVEuHDrL+MN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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