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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e932cb84e59e20d179302bd5386f37aac8f00abc2d1093c798b5cb76391bc07' 
  AND token = 'lE4cWmkOmU5SVDIH4mvINU6uqDossoPK8lYcf8sbYXI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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