SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccaf0e78dae382a31c0be947f78320743d4533dbbb9ec399ed923de049f74342' 
  AND token = 'Pg9SmOBzspvqV/2z5t6BaOroD0f0TW8fG5+4Z/cvhPI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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