SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '060681f321b6f43783529b81789f144f56e32c9327468ffc4b2e1775eea099ce' 
  AND token = 'liKI3DOvK86uH3z3eGYinb5QQl+aN7kIGfkqQmys/Bg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}