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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2fe7bb84ebf2e5e6425bdbf890d0691733d6e32e09e82225783412cc1f9c70e0' 
  AND token = '8sFfrbVp8F5j5oXSywmB++UQUJQHaiAJjbQqfr28i7E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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