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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e9aa3d1b11324e6d6a06eba21fb302122a80fbaac558c5099d68c2a7dd6149a1' 
  AND token = 'UomS/aVRnV3kmLbJRzyJ23EEb3fwH9RbNRf1hdB11wU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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