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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '237b32ccb83a49fe57a8b28b9d2a90ff6a2431171f73542f8c0c49ae1e0b01c9' 
  AND token = 'drhuQzGQ8Bemat2TojAWERPz8GJYtVTTqFTWDJ1AuxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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