Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd303de51670dbc16cd7647327cff823e5fd864a5dd61c644fd290e60e86701d2' 
  AND token = 'rij1Ch41BcztPzUf5a/H4BDhSdXdhlsC+1h5S3LodYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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