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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd3f246e83e53754b120e27d66f61400d0b070d5ae11e57b70f626459a558217' 
  AND token = 'lik0hYuxYfmkXivlFIkkJ/5KNpeHx5KbL3fM6ZGyHuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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