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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0924877e87c18b93fe8101bd65019cfe869216d1cd2e7c0cd4941f41088c2f20' 
  AND token = 'pZfyTrrkxqO7ci37aX1zoU0h2yILfI2/b/3iP98yI2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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