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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'acd9b28a0ae2c08d0f41aebbccd86794a1029fdb72e6892fa9c23bf7ab18e771' 
  AND token = 'LHH896PP9L+jUQ+Th7av67NpyhuaesIVSUH10vZ3AsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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