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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '001764b3acccbd8cb162a6e2cb996dcc31c469edc8915e85d947bb3a10c78a03' 
  AND token = 'IM20Jmg/XlIP1kVjS/muExtRtsbK5zGFV10e191prFI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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