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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24ad5fd49c5aaa1fedf7011a60b8ac3f90d5ad38af4bf853b3741d0b1081adef' 
  AND token = 'HF8SUsH+yW1ETpNE0PcEsXzqfRvHEgHwfYqvAuNEtoA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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