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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01d3642d95a96960895f146c71601f86b8d9a5500438eadb2b892a4bc00b81b0' 
  AND token = 'zpyNm6PERQ5R9/HjbfzOGNoNWzvmOsudDb97tK2oaEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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