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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7894282430224f677b2eefc06f261d9aae2a96162d29aee7f5dea38929ff5905' 
  AND token = 'Lgf0j7AdcrKllXd+xzlCA7QH3EtV6meu1EdqfhBPYGg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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