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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b232a9847b6f08f6c732b01bdc6209686b6d87d83718b08b8acd37f7e9778f1' 
  AND token = 'Vwqe9mvFd7VrKGUtinWSc0NQ/Nl7vnyFg3kOTxSq4GE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00150

JSON explain

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