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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7972d444f84713a821647d4b003df3e503f68d685d6cca3bce251c022823d121' 
  AND token = 'Kdim4uk/P4/O9G/t62YnjokTXn+HJZbXd8ospcXq34E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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