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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ea152a139b8f5a74b0accc92382d32d5e808b02f405535e47038a2091724663' 
  AND token = 'JnAP1cRSuVkDw3h1opFTNSz5m/2mx5NPWu8zNTxPf9M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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