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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3c1aee572f5810f47f2c18a6c59375062fd5ae5077100dccd8ef0042572c05' 
  AND token = '0IxKJCQ8YwMEThyy/vTsd7/4uVB9OJSWVsaBPGrEJuA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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