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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '019f085ad25b9c250fa3b90b70db9e04077d5efd842483a093bac3fe66772ea5' 
  AND token = 'KJcl1EzrVBMoHPXsStJMH9M6JakC8gHG4YR6Ye6Ce38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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