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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd235d087ec4a25f999fea1ffdbe9ab5880028476d3dbb067ba2476d7f43caa93' 
  AND token = 'bbTTedYcoffK78dV3Lqz2uVPZKG8HW7loMLOc/qWtr8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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