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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '022c52b2efe89e2c8bd0291315a35ef9f7f0f93adedc3cb072fa85f5d347b4a0' 
  AND token = 'dDICsPmSJLwCUg9O44QvxC1gBToVzfIkk0J/tna/PEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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