Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0999786a5d1ece64d7f928debff5f79f789e531c22112a2e734540243a721915' 
  AND token = 'kOAcMu83T6xkCs7cCa1JPPmiKlHZpJyHa4u7i17GrGc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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