SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e02983fa0f1111ffba28148c07faa90b237805c1842bb75c957af5cfd763b4e' 
  AND token = '+hqhwp3G5+y6jS1g+DOC4xQ6F6DmWhcHw3AdvKhtYNc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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