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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01592dee61257eecb156f0cbe1d5d6458efbfe0aa0af00880033ba64330fc2e7' 
  AND token = 'RPKjSFOkbZIFtQu4pLyG0UBjRC9R0I/sc8cMIkBHrSo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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