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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59bd2656c952c4a6a9924d236f8456613938f6c685765c6b2863fefeca0b32dc' 
  AND token = '5UWg3M2j8zr8ZIKPNEKILk5IcVEIII7xgqgFXv3SQkk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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