Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e06b143efa80cbea7a5a0759808b5505f227f8c0c9d6ce0837976e40f08f0343' 
  AND token = '9ehlv3FvuahtNi6lMI5jl+dqQ6sgC97GSl1Qee0BO34=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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