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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6b1d772a3d2e42c582aba27ecf77eb6d2c55824daffe8282e3e284e09d9cbb69' 
  AND token = 'xorpuP4y3OnvR7mDyOPmPVijjYJmtU92kXO/qs7Bak8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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